An automatic filling and tabletting device for pyrotechnic compositions and a method thereof

Abstract

The application relates to the technical field of powder tabletting, and discloses an automatic filling and tabletting device for fireworks and a method thereof, which comprises an operation table, a tabletting assembly is arranged on the operation table, the tabletting assembly comprises a middle shaft, a sleeve is rotationally connected to the outer wall of the middle shaft, a pressure disc and a hole disc are fixedly connected to the outer wall of the sleeve, and a plurality of tabletting holes are formed in the hole disc; a feeding assembly is arranged on the operation table and used for filling the fireworks into the tabletting holes; an isolating assembly is arranged on the feeding assembly and used for spraying an isolating agent in the tabletting holes. Through cooperation of the tabletting assembly and the feeding assembly, the fireworks in a material box are continuously filled into the plurality of tabletting holes in the process that the pressure disc and the hole disc continuously rotate, the technical effect of continuous automatic feeding is achieved, meanwhile, the plurality of pressure shafts can be sequentially lowered for tabletting treatment, and the technical effect of automatic continuous tabletting is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder tabletting, in particular to an automatic filling and tabletting device for pyrotechnic powder and a method thereof. BACKGROUND

[0002] Pyrotechnic powder is the core energy carrier of fireworks and firecrackers, which is mixed by various raw materials. In order to meet the precise requirements of pyrotechnic products on the form and density of the powder, the loose pyrotechnic powder needs to be processed into pyrotechnic powder tablets to make the density of the pyrotechnic powder uniform, ensure the stability of the burning rate, and at the same time, facilitate transportation and storage, and improve the safety of the products. The existing technology mainly uses an intermittent stamping device to process pyrotechnic powder tablets. The main working principle is to place the pyrotechnic powder in a mold, and then use a stamping device to perform tabletting operation to produce pyrotechnic powder tablets intermittently.

[0003] However, the existing technology has the following problems:

[0004] When the intermittent stamping device is used to produce pyrotechnic powder tablets, only a few pyrotechnic powder tablets can be tabletted each time, and after completing one operation, the pyrotechnic powder needs to be discharged and fed again before tabletting operation. Since the intermittent tabletting operation needs to be temporarily stopped during feeding and discharging, the working efficiency is limited, and it is difficult to meet the production demand of large quantities. In addition, the feeding and discharging operations need to be continuously performed by manual work, which increases the risk of human contact with pyrotechnic powder. SUMMARY

[0005] The purpose of the present application is to solve the above problems and provide an automatic filling and tabletting device for pyrotechnic powder and a method thereof to overcome the defects of the prior art, as described in detail below.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The automatic filling and tabletting device for pyrotechnic powder provided by the present application comprises an operation table, a tabletting assembly is arranged on the operation table, the tabletting assembly comprises a middle shaft, the middle shaft is fixedly installed on the operation table, a sleeve is rotatably connected to the outer wall of the middle shaft, a pressure disc and a hole disc are fixedly connected to the outer wall of the sleeve, the pressure disc is located above the hole disc, a plurality of pressure shafts are slidably connected to the pressure disc, a plurality of tabletting holes are formed in the hole disc, and the plurality of tabletting holes are located below the plurality of pressure shafts, a driving part for driving the sleeve to rotate is arranged on the middle shaft, a contact block is fixedly installed on the middle shaft, the pressure shafts contact the contact block and are pushed downward by the contact block during movement, and the pressure shafts can tablet the pyrotechnic powder in the tabletting holes below when moving downward; a feeding assembly is arranged on the operation table to fill the tabletting holes with pyrotechnic powder; and an isolation assembly is arranged on the feeding assembly to spray an isolation agent in the tabletting holes.

[0008] Preferably, the driving part comprises a motor fixedly installed on the top of the middle shaft, and a gear fixedly connected to the output end of the motor, and a crown gear ring fixedly installed on the top of the sleeve.

[0009] Preferably, the two ends of the abutting block are provided with inclined surfaces, the top of the pressing shaft is capable of sliding along the inclined surfaces of the abutting block to the bottom surface of the abutting block when moving, and the connection between the pressing shaft and the pressing plate is provided with a spring for driving the pressing shaft to reset upward.

[0010] Preferably, the bottom surface of the hole disc is hingedly connected with a bottom cover, the side of the bottom cover away from the hole disc is fixedly connected with an inclined block, the outer wall of the middle shaft is fixedly connected with an abutting disc, the inclined block is in abutment with the abutting disc when moving and drives the bottom cover to abut against the bottom of the pressing tablet hole, the hinged connection between the bottom cover and the hole disc is provided with a coil spring, the abutting disc is provided with a notch, the inclined block swings downward by the elastic force of the coil spring and gravity when moving to the notch of the abutting disc, and a slide is fixedly installed on the operation table and located below the notch of the abutting disc.

[0011] Preferably, the bottom surface of the abutting block is fixedly connected with a protruding block, the pressing shaft is in contact with the protruding block and is driven to move downward by the counteracting force of the protruding block when moving, and the pressing shaft is in contact with the protruding block after the movement of the inclined block to the notch of the abutting disc, so that the pressing shaft extrudes the powder tablet in the pressing tablet hole downward, and the pressing shaft is separated from the abutting block after being separated from the protruding block.

[0012] Preferably, the feeding assembly comprises a mounting frame fixedly installed on the operation table, a cartridge fixedly installed on the mounting frame, and a hopper fixedly installed on the cartridge, the cartridge is in sliding contact with the top surface of the hole disc, and the pressing tablet hole passes through the cartridge and is filled with powder during movement.

[0013] Preferably, the isolation assembly comprises a liquid tank fixedly installed on the outer wall of the cartridge, a liquid pipe and an air pipe fixedly installed on the liquid tank, a fixing cylinder fixedly installed on the outer wall of the cartridge, a sliding shaft slidingly connected to the inner wall of the fixing cylinder, a spherical nozzle fixedly connected to the bottom of the sliding shaft, flow channels formed in the sliding shaft and the spherical nozzle and communicating with each other, the end of the liquid pipe away from the liquid tank in communication with the flow channel in the sliding shaft, an air bag fixedly installed on the outer wall of the cartridge, the air bag connected with the end of the air pipe away from the liquid tank, a spring arranged between the sliding shaft and the fixing cylinder, the spherical nozzle located on the movement track of the pressing tablet hole, the spherical nozzle capable of sliding into the pressing tablet hole by the elastic force of the spring when the pressing tablet hole passes below the spherical nozzle, a pressing block fixedly connected to the outer wall of the sliding shaft, the pressing block connected with the top of the air bag, a plurality of atomizing nozzles arranged on the spherical nozzle, and the spherical nozzle sprays the isolation agent in the pressing tablet hole when sliding into the pressing tablet hole.

[0014] As preferred, the feeding assembly further comprises a pushing part, the pushing part comprises a slope block, the slope block is fixedly installed in the box, a push block is slidably connected between the bottom of the slope block and the inner wall of the bottom of the box, a spring is arranged between the push block and the inner wall of the box, a connecting rod is fixedly installed on the push block, a rotating connecting rod is rotatably connected through the box, one end of the rotating connecting rod is connected with the push block through a sliding hinge, the other end of the rotating connecting rod is fixedly connected with a ball head, the outer wall of the pressure plate is fixedly connected with a wave ring, the ball head is in sliding contact with the wave ring, when the wave ring rotates, the ball head can drive the rotating connecting rod to reciprocating swing, when the rotating connecting rod reciprocating swings, the push block is driven to reciprocate through the connecting rod, two sawtooth rods are fixedly connected on the push block, a vibrating rod is fixedly installed in the box, two vibrating forks are fixedly installed on the vibrating rod, when the sawtooth rods move, they contact with the vibrating rod and drive the vibrating rod to vibrate.

[0015] As preferred, the feeding assembly further comprises a de-caking part, the de-caking part comprises two horizontal rods, both of which are fixedly connected to the inner wall of the hopper, a group of first steel sheets are fixedly connected to the horizontal rods, two rotating shafts are rotatably installed on the inner wall of the hopper, a group of second steel sheets are fixedly connected to the rotating shafts, both of the rotating shafts are located between the two groups of first steel sheets, first connecting rods are fixedly connected to the rotating shafts, a sliding rod is vertically and slidably connected to the inner wall of the box, a second connecting rod is hingedly connected to the bottom of the sliding rod, the end of the second connecting rod away from the sliding rod is hingedly connected with the connecting rod, the ends of both of the first connecting rods away from the rotating shafts are hingedly connected with the sliding rod, when the sliding rod moves up and down, it can drive both of the rotating shafts to reciprocating rotate through the two first connecting rods.

[0016] A method for automatic filling and tabletting of pyrotechnic composition, comprising the following steps:

[0017] Step one: raw material feeding, the raw materials are weighed and fed into the mixing machine by weight reduction method;

[0018] Step two: raw material mixing, the raw materials are mixed by the mixing machine to ensure that the uniformity meets the requirements;

[0019] Step three: raw material pressing, the raw materials are pressed into slabs by the roller press;

[0020] Step four: granulation, the slabs are crushed into granules by the granulator;

[0021] Step five: adding processing aids, processing aids are added to the granules in proportion, and then mixed evenly by the mixing machine to obtain the pyrotechnic composition;

[0022] Step six: tabletting, the pyrotechnic composition is fed into the feeding assembly, and continuous tabletting is performed by the tabletting assembly.

[0023] The beneficial effects are:

[0024] 1. The device for automatic filling and tabletting of pyrotechnic powder, through the cooperation of the tabletting assembly and the feeding assembly, the powder in the powder box is continuously filled into the plurality of tabletting holes during the continuous rotation of the platen and the hole disc, achieving the technical effect of continuous automatic feeding. At the same time, the plurality of pressing shafts can be sequentially lowered for tabletting processing, thereby achieving the technical effect of automatic and continuous tabletting. After the pyrotechnic tablet is pressed, the bottom cover swings downward, and the pyrotechnic tablet is extruded out of the tabletting hole through the downward movement of the pressing shaft, achieving automatic unloading, thereby achieving the technical effects of automatic feeding, cyclic pyrotechnic tablet pressing, and automatic unloading, realizing automatic and continuous production of pyrotechnic tablets, and improving work efficiency and automation level.

[0025] 2. The device for automatic filling and tabletting of pyrotechnic powder, through the setting of the isolation assembly, the plurality of atomizing nozzles of the spherical nozzle spray isolation agent on the inner wall of the tabletting hole before the tabletting hole is filled with powder. The attachment of the isolation agent on the inner wall of the tabletting hole can form an isolation layer, which separates the outer wall of the pyrotechnic tablet from the inner wall of the tabletting hole, avoids the partial outer wall of the pyrotechnic tablet adhering to the inner wall of the tabletting hole after the pyrotechnic tablet is formed, and enables the pyrotechnic tablet to completely separate from the tabletting hole, thereby ensuring the smoothness of the inner wall of the tabletting hole and the subsequent tabletting quality.

[0026] 3. The device for automatic filling and tabletting of pyrotechnic powder, through the setting of the pushing part, the pushing block continuously pushes the powder to the discharge port of the powder box through horizontal reciprocating movement, keeps the powder box always filled with powder, avoids the incomplete filling of the powder in the tabletting hole due to partial lack of powder in the powder box during feeding, and thereby affects the tabletting quality. Through the setting of the deagglomeration part, when the two groups of second steel sheets move from top to bottom, a shearing force can be applied to the agglomerated powder temporarily left on the two groups of first steel sheets, so that the agglomerated powder is broken and passes through the gap between the two groups of first steel sheets, thereby achieving the technical effect of crushing the agglomerated powder. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a schematic diagram of the overall structure of the present application;

[0029] Figure 2 is a schematic diagram of the tabletting assembly structure of the present application;

[0030] Figure 3 is a schematic diagram of the driving part structure of the present application;

[0031] Figure 4 Figure 1 is a schematic diagram of the sleeve structure of the present application;

[0032] Figure 5 Figure 2 is a schematic diagram of the compression shaft structure of the present application;

[0033] Figure 6 Figure 3 is a schematic diagram of the bottom cover structure of the present application;

[0034] Figure 7 Figure 4 is a schematic diagram of the contact disc structure of the present application;

[0035] Figure 8 Figure 5 is a schematic diagram of the slide structure of the present application;

[0036] Figure 9 Figure 6 is a schematic diagram of the isolation assembly structure of the present application;

[0037] Figure 10 Figure 7 is a schematic diagram of the spherical nozzle structure of the present application;

[0038] Figure 11 Figure 8 is a schematic diagram of the pushing part structure of the present application;

[0039] Figure 12 Figure 9 is a schematic diagram of the rotating rod structure of the present application;

[0040] Figure 13 Figure 10 is a schematic diagram of the sawtooth rod structure of the present application;

[0041] Figure 14 Figure 11 is a schematic diagram of the de-caking part structure of the present application;

[0042] Figure 15 Figure 12 is a schematic diagram of the second steel sheet structure of the present application.

[0043] The reference signs are explained as follows:

[0044] 1. operation table;

[0045] 2. tablet compression assembly; 21. central shaft; 22. sleeve; 23. compression disc; 24. hole disc; 241. tablet compression hole; 25. compression shaft; 26. contact block; 261. protruding block; 27. bottom cover; 28. inclined block; 29. contact disc;

[0046] 3. feeding assembly; 31. mounting frame; 32. cartridge; 33. hopper;

[0047] 4. isolation assembly; 41. liquid tank; 42. liquid pipe; 43. fixed cylinder; 44. slide shaft; 45. spherical nozzle; 46. air bag; 47. air pipe; 48. compression block;

[0048] 5. driving part; 51. motor; 52. gear; 53. crown gear ring;

[0049] 6, pushing part; 61, slope block; 62, pushing block; 63, connecting rod; 64, rotating rod; 65, ball head; 66, wavy ring; 67, sawtooth rod; 68, vibrating rod; 69, vibrating fork;

[0050] 7, de-agglomerating part; 71, horizontal rod; 72, first steel sheet; 73, rotating shaft; 74, second steel sheet; 75, first connecting rod; 76, sliding rod; 77, second connecting rod;

[0051] 8, slide. DETAILED DESCRIPTION

[0052] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application. Embodiment 1

[0053] The prior art uses an intermittent stamping device to produce gunpowder tablets, and each time only a certain number of gunpowder tablets can be pressed, and after completing the operation, the blanking and feeding operations need to be performed, and then the pressing operation is performed. Since the intermittent pressing operation needs to be temporarily stopped during blanking and feeding, the work efficiency is limited, and it is difficult to meet the production demand of large quantities, and the artificial continuous blanking and feeding operation is required. In order to solve the above problems, the embodiment is invented.

[0054] Please refer to Figure 1 - Figure 6The utility model relates to a kind of automatic filling and tabletting device for pyrotechnic composition, including operation platform 1, and operation platform 1 is provided with tabletting assembly 2, and tabletting assembly 2 includes middle shaft 21, and middle shaft 21 is fixedly installed on operation platform 1, the outer wall of middle shaft 21 is rotatably connected with sleeve 22, the outer wall of sleeve 22 is fixedly connected with pressure plate 23 and hole disc 24, and pressure plate 23 is located above hole disc 24, a plurality of pressure shafts 25 are slidably connected in penetration on pressure plate 23, a plurality of tabletting holes 241 are opened in hole disc 24, and a plurality of tabletting holes 241 are located below a plurality of pressure shafts 25 respectively, and driving part 5 for driving sleeve 22 rotation is provided on middle shaft 21, and contact block 26 is fixedly installed on middle shaft 21, and pressure shaft 25 is contacted with contact block 26 during movement and is pushed down by the counterforce of contact block 26, and when pressure shaft 25 is pushed down, it can be pressed tablet to the pyrotechnic composition in the tabletting hole 241 below it;Sleeve 22 can rotate on middle shaft 21, and when sleeve 22 rotates, it drives pressure plate 23 and hole disc 24 to rotate, tabletting hole 241 is used to hold pyrotechnic composition, and pressure shaft 25 can be inserted into the tabletting hole 241 below it during pushing down, and during the continuous rotation of pressure plate 23 and hole disc 24, a plurality of pressure shafts 25 can be pushed down in sequence to be pressed tablet, to realize the technical effect of automatic continuous tabletting.

[0055] Further, refer to Figure 2 - Figure 4 Driving part 5 includes motor 51, and motor 51 is fixedly installed on the top of middle shaft 21, the output end of motor 51 is fixedly connected with gear 52, and crown gear ring 53 is fixedly installed on the top of sleeve 22, gear 52 is engaged with crown gear ring 53, and after motor 51 is started, gear 52 is driven to rotate, and when gear 52 rotates, sleeve 22 is driven to rotate by crown gear ring 53, so that sleeve 22 drives pressure plate 23 and hole disc 24 to rotate.

[0056] In addition, refer to Figure 5 - Figure 6 The both ends of contact block 26 are provided with inclined surface, and the top of pressure shaft 25 can slide along the inclined surface of contact block 26 to the bottom surface of contact block 26 when moving, and the connecting place of pressure shaft 25 and pressure plate 23 is provided with spring (as shown in Figure 5 ) for driving pressure shaft 25 to reset upwards, the area below contact block 26 is tabletting area, and when tabletting hole 241 and pressure shaft 25 pass below contact block 26, pressure shaft 25 is pushed down to be pressed tablet, to form pyrotechnic tablet.

[0057] In addition, refer to Figure 5 - Figure 8A bottom cover 27 is hinged to the bottom surface of the perforated plate 24. A ramp block 28 is fixedly connected to the side of the bottom cover 27 away from the perforated plate 24. A contact plate 29 is fixedly connected to the outer wall of the central shaft 21. When the ramp block 28 moves, it abuts against the contact plate 29 and drives the bottom cover 27 to abut against the bottom of the pressing hole 241. A coil spring is provided at the hinge point between the bottom cover 27 and the perforated plate 24. A notch is provided on the contact plate 29. When the ramp block 28 moves to the notch of the contact plate 29, it swings downward using the spring force of the coil spring and the gravity of the bottom cover 27 and the ramp block 28. A slide rail 8 is fixedly installed on the operating table 1. The slide rail 8 is located below the notch of the contact plate 29. When the ramp block 28 is not located above the slide rail 8, that is, when the ramp block 28 is not in the position of the notch, the ramp block 28 is in the position of the notch. Inside the notch of the contact plate 29, the inclined block 28 abuts against the outer wall of the contact plate 29, so that the inclined block 28 is tightly pressed against the bottom of the tableting hole 241. At this time, the bottom cover 27 blocks the bottom outlet of the tableting hole 241, so that the gunpowder in the tableting hole 241 cannot fall. During tableting, the tableting process is achieved by the downward pressure of the bottom cover 27, the inner wall of the tableting hole 241 and the pressure shaft 25. After the tableting is completed, the inclined block 28 enters the notch of the contact plate 29, so that the inclined block 28 is disengaged from the contact plate 29. The inclined block 28 and the bottom cover 27 swing downward by the spring force and their own weight, so that the bottom cover 27 is disengaged from the bottom outlet of the tableting hole 241. At this time, the gunpowder tablet can fall and disengage from the tableting hole 241.

[0058] It is worth noting that, please refer to Figure 6 - Figure 8 A protrusion 261 is fixedly connected to the bottom surface of the contact block 26. When the pressure shaft 25 moves, it contacts the protrusion 261 and is pushed downward by the counterforce of the protrusion 261. After the inclined block 28 moves to the notch of the contact plate 29, the pressure shaft 25 contacts the protrusion 261, causing the pressure shaft 25 to squeeze the gunpowder tablet in the tablet pressing hole 241 downward. After the pressure shaft 25 disengages from the protrusion 261, it disengages from the contact block 26. After the bottom cover 27 swings downward, the pressure shaft 25 above the bottom cover 27 and... When the protrusion 261 contacts, the pressure shaft 25 moves downward. Since the bottom cover 27 no longer obstructs the bottom of the gunpowder tablet, the downward movement of the pressure shaft 25 can squeeze the gunpowder tablet out of the pressing hole 241, preventing some gunpowder tablets from adhering to the pressing hole 241 and being unable to fall by their own weight. Subsequently, the gunpowder tablet falls onto the slide 8, which is connected to an external collection device. The gunpowder tablet slides through the slide 8 into the collection device, achieving the technical effect of automatic feeding.

[0059] It is worth noting that, please refer to Figure 1 , Figure 2 , Figure 11The operating table 1 is provided with a feeding assembly 3 for filling the tablet pressing holes 241 with gunpowder. The feeding assembly 3 comprises a mounting frame 31 fixedly installed on the operating table 1, a hopper 32 fixedly installed on the mounting frame 31, and a hopper 33 fixedly installed on the hopper 32. The hopper 32 is in sliding contact with the top surface of the hole disc 24. The tablet pressing holes 241 pass through the hopper 32 and are filled with gunpowder during movement. The gunpowder in the hopper 33 falls into the hopper 32. The hopper 32 remains in a stationary state when the hole disc 24 rotates. The hopper 32 is provided with a discharge port. When the tablet pressing holes 241 move below the discharge port, part of the gunpowder in the hopper 32 is filled into the tablet pressing holes 241 by gravity. When the tablet pressing holes 241 are separated from the hopper 32, the excess gunpowder on the top surface of the tablet pressing holes 241 is scraped off by the bottom edge of the hopper 32, so that the gunpowder in the tablet pressing holes 241 is just filled to the tablet pressing holes 241. Then, the pressing shaft 25 moves downward for tablet pressing. As the gunpowder in the hopper 32 is continuously filled into the plurality of tablet pressing holes 241, the gunpowder in the hopper 33 also continuously falls into the hopper 32 for replenishment, thereby achieving the technical effect of continuous and automatic feeding. Embodiment 2

[0060] On the basis of the above-mentioned embodiments, during actual tablet pressing operation, the outer wall of the gunpowder tablet may be bonded with the inner wall of the tablet pressing hole 241 after pressing, which may cause the outer wall of the gunpowder tablet to be damaged when the gunpowder tablet is separated from the tablet pressing hole 241. At the same time, the inner wall of the tablet pressing hole 241 may also be attached with residual gunpowder, which may affect the subsequent tablet pressing quality. In order to solve the above-mentioned problems, the embodiment is invented.

[0061] Please refer to Figure 1 , Figure 9 - Figure 10The feeding assembly 3 is provided with an isolating assembly 4 for spraying isolating agent in the tablet pressing hole 241. The isolating assembly 4 comprises a liquid tank 41 fixedly installed on the outer wall of the feeding box 32, the liquid tank 41 containing isolating agent, the liquid tank 41 being fixedly installed with a liquid pipe 42 and an air pipe 47, the outer wall of the feeding box 32 being fixedly installed with a fixing cylinder 43, the inner wall of the fixing cylinder 43 being slidably connected with a sliding shaft 44, the bottom of the sliding shaft 44 being fixedly connected with a spherical nozzle 45, the sliding shaft 44 and the spherical nozzle 45 being provided with a flow channel in communication, the liquid pipe 42 being in communication with the flow channel in the sliding shaft 44 at the end away from the liquid tank 41, the outer wall of the feeding box 32 being fixedly installed with an air bag 46, the air bag 46 being connected with the air pipe 47 at the end away from the liquid tank 41, the sliding shaft 44 and the fixing cylinder 43 being provided with a spring, the spherical nozzle 45 being located on the movement track of the tablet pressing hole 241, the spherical nozzle 45 being capable of sliding into the tablet pressing hole 241 by the spring force when passing below the tablet pressing hole 241, the outer wall of the sliding shaft 44 being fixedly connected with a pressing block 48, the pressing block 48 being connected with the top of the air bag 46, the spherical nozzle 45 being provided with a plurality of atomizing nozzles, the spherical nozzle 45 spraying isolating agent in the tablet pressing hole 241 when sliding into the tablet pressing hole 241; the spherical nozzle 45 abutting against the hole disc 24 by the spring force, the spherical nozzle 45 being provided with a spherical surface, the spherical nozzle 45 sliding into and out of the tablet pressing hole 241 along the edge of the tablet pressing hole 241 when passing below the tablet pressing hole 241, thus, the spherical nozzle 45 moving downward and then upward to reset when passing below the tablet pressing hole 241, the spherical nozzle 45 moving synchronously with the sliding shaft 44, the sliding shaft 44 moving downward with the pressing block 48, the pressing block 48 extruding the air bag 46 downward, the air bag 46 injecting air into the liquid tank 41 through the air pipe 47 after being extruded, the liquid tank 41 injecting isolating agent into the flow channel in the sliding shaft 44 and the spherical nozzle 45 by the positive pressure, the plurality of atomizing nozzles being in communication with the flow channel, the plurality of atomizing nozzles of the spherical nozzle 45 finally spraying isolating agent on the inner wall of the tablet pressing hole 241, the inner wall of the tablet pressing hole 241 being attached with isolating agent to form an isolating layer, the outer wall of the powder charge being isolated from the inner wall of the tablet pressing hole 241, the powder charge being capable of completely separating from the tablet pressing hole 241 after being formed, thus ensuring the smoothness of the inner wall of the tablet pressing hole 241 and the tablet pressing quality. Embodiment 3

[0062] On the basis of the above embodiment, the powder charge in the feeding box 32 may be partially hollowed and lack of powder charge when feeding, thus causing the powder charge in some tablet pressing holes 241 to be not filled, thereby affecting the tablet pressing quality. In order to solve the above problem, the embodiment is invented.

[0063] Please refer to Figure 2 , Figure 11 - Figure 13, the feeding assembly 3 further comprises a pushing part 6, the pushing part 6 comprises a slope block 61, the slope block 61 is fixedly installed in the box 32, a push block 62 is in horizontal sliding connection between the bottom of the slope block 61 and the inner wall of the bottom of the box 32, a spring is arranged between the push block 62 and the inner wall of the box 32, a connecting rod 63 is fixedly installed on the push block 62, a rotating rod 64 is rotatably connected on the box 32, one end of the rotating rod 64 is connected with the push block 62 through a sliding hinge, the other end of the rotating rod 64 is fixedly connected with a ball head 65, a wave ring 66 is fixedly connected on the outer wall of the pressure plate 23, the ball head 65 is in sliding contact with the wave ring 66, when the wave ring 66 rotates, the rotating rod 64 can be driven to reciprocating swing through the ball head 65, when the rotating rod 64 reciprocating swings, the push block 62 is driven to reciprocate through the connecting rod 63, two sawtooth rods 67 are fixedly connected on the push block 62, a vibrating rod 68 is fixedly installed in the box 32, two vibrating forks 69 are fixedly installed on the vibrating rod 68, when the sawtooth rods 67 move, the vibrating rod 68 is contacted and driven to vibrate; when the pressure plate 23 rotates, the wave ring 66 is driven to rotate, the contact surface between the wave ring 66 and the ball head 65 is an annular wave surface, due to the elastic force of the spring between the box 32 and the push block 62, the push block 62 always maintains the elastic force in the direction away from the hole plate 24, the push block 62 applies force to the rotating rod 64 through the connecting rod 63, so that the ball head 65 on the rotating rod 64 always abuts against the wave ring 66, therefore, when the wave ring 66 rotates, the ball head 65 slides along the annular wave surface of the wave ring 66, thereby realizing the technical effect that the rotating rod 64 reciprocating swings, and when the rotating rod 64 reciprocating swings, the push block 62 is driven to reciprocate horizontally through the connecting rod 63 (as shown in Figure 12 The powder in the hopper 33 falling into the box 32 first falls into the box 32 along the slope block 61, then the push block 62 continuously pushes the powder to the discharge port of the box 32 through horizontal reciprocation, so that the box 32 is always filled with powder, and the powder in the pressing hole 241 is not filled due to local lack of powder in the box 32 during the feeding process, thereby affecting the pressing quality.

[0064] It is worth mentioning that, please refer to Figure 2 、 Figure 13 - Figure 15The feeding assembly 3 further comprises a de-agglomerating part 7, the de-agglomerating part 7 comprises two horizontal rods 71 fixedly connected to the inner wall of the hopper 33, a group of first steel sheets 72 are fixedly connected to the horizontal rods 71, two rotating shafts 73 are rotatably installed on the inner wall of the hopper 33, a group of second steel sheets 74 are fixedly connected to the rotating shafts 73, the two rotating shafts 73 are located between the two groups of first steel sheets 72, a first connecting rod 75 is fixedly connected to the rotating shaft 73, a sliding rod 76 is vertically and slidably connected to the inner wall of the hopper 33, a second connecting rod 77 is hingedly connected to the bottom of the sliding rod 76, the end of the second connecting rod 77 away from the sliding rod 76 is hingedly connected to the connecting rod 63, the ends of the two first connecting rods 75 away from the rotating shaft 73 are hingedly connected to the sliding rod 76, when the sliding rod 76 moves up and down, the two rotating shafts 73 are driven to rotate back and forth by the two first connecting rods 75; the two groups of first steel sheets 72 are horizontally arranged, the gunpowder falling from the hopper 33 to the hopper 32 needs to pass through the gaps formed by the two groups of first steel sheets 72, the two groups of first steel sheets 72 form a structure similar to a grid, which can intercept the agglomerated gunpowder in the hopper 33 above the two groups of first steel sheets 72, and when the connecting rod 63 moves horizontally, the sliding rod 76 is driven to move up and down by the second connecting rod 77, so that the two rotating shafts 73 drive the two groups of second steel sheets 74 to swing back and forth, during the movement of a group of second steel sheets 74, the group of second steel sheets 74 can pass through the gaps between a group of first steel sheets 72 from top to bottom, so that when the two groups of second steel sheets 74 move from top to bottom, a shearing force can be applied to the agglomerated gunpowder temporarily retained on the two groups of first steel sheets 72, so that the agglomerated gunpowder is broken and then passes through the gaps between the two groups of first steel sheets 72, thereby achieving the technical effect of crushing the agglomerated gunpowder, and avoiding the situation that the agglomerated gunpowder enters the hopper 32 and the tablet pressing hole 241 and causes blockage. Embodiment 4

[0065] A method for automatic filling and tablet pressing of gunpowder, which adopts the device for automatic filling and tablet pressing of gunpowder in the above embodiment, further comprises the following steps:

[0066] Step one: raw material feeding, the raw materials are weighed and added to the mixing machine by the weight loss method;

[0067] Step two: raw material mixing, the raw materials are mixed by the mixing machine to ensure that the uniformity of the raw materials meets the requirements;

[0068] Step three: raw material pressing, the raw materials are pressed into slabs by the roller type pressing machine;

[0069] Step four: granulation, the slabs are crushed into granules by the granulator;

[0070] Step five: adding processing aids, processing aids are added to the granules in proportion, and then mixed evenly by the mixing machine to obtain gunpowder;

[0071] Step six: tabletting, the gunpowder is put into the feeding assembly 3, and the tabletting assembly 2 is used for continuous tabletting treatment.

[0072] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A device for automatic filling and tabletting of pyrotechnic compositions, comprising an operating table (1), characterized in that: a tabletting assembly (2) is arranged on the operating table (1), the tabletting assembly (2) comprises a middle shaft (21) fixedly installed on the operating table (1), the outer wall of the middle shaft (21) is rotationally connected with a sleeve (22), the outer wall of the sleeve (22) is fixedly connected with a pressure disc (23) and a hole disc (24), the pressure disc (23) is located above the hole disc (24), a plurality of pressure shafts (25) are slidingly connected through the pressure disc (23), a plurality of tabletting holes (241) are formed in the hole disc (24), and the plurality of tabletting holes (241) are respectively located below the plurality of pressure shafts (25); a driving part (5) for driving the sleeve (22) to rotate is arranged on the middle shaft (21), a contact block (26) is fixedly installed on the middle shaft (21), the pressure shaft (25) is in contact with the contact block (26) during movement and is pushed downward by the contact block (26), and the pressure shaft (25) can perform tabletting treatment on the pyrotechnic composition in the tabletting hole (241) below the pressure shaft (25) when the pressure shaft (25) moves downward; a feeding assembly (3) is arranged on the operating table (1) and used for filling the pyrotechnic composition into the tabletting hole (241); an isolation assembly (4) is arranged on the feeding assembly (3) and used for spraying an isolation agent in the tabletting hole (241); the two ends of the contact block (26) are provided with inclined surfaces, the top of the pressure shaft (25) can slide along the inclined surface of the contact block (26) to the bottom surface of the contact block (26) during movement, and a spring for driving the pressure shaft (25) to reset upward is arranged at the connection position of the pressure shaft (25) and the pressure disc (23); the bottom surface of the hole disc (24) is hingedly connected with a bottom cover (27), one side of the bottom cover (27) away from the hole disc (24) is fixedly connected with an inclined block (28), the outer wall of the middle shaft (21) is fixedly connected with a contact disc (29), the inclined block (28) is in abutment with the contact disc (29) during movement and drives the bottom cover (27) to abut against the bottom of the tabletting hole (241), a coil spring is arranged at the hinged position of the bottom cover (27) and the hole disc (24), a notch is arranged on the contact disc (29), the inclined block (28) swings downward by the elastic force of the coil spring and gravity when the inclined block (28) moves to the notch of the contact disc (29), and a slide (8) is fixedly installed on the operating table (1) and located below the notch of the contact disc (29); the bottom surface of the contact block (26) is fixedly connected with a protruding block (261), the pressure shaft (25) is in contact with the protruding block (261) during movement and is pushed downward by the protruding block (261), the pressure shaft (25) is in contact with the protruding block (261) after the inclined block (28) moves to the notch of the contact disc (29), so that the pressure shaft (25) extrudes the pyrotechnic composition tablet in the tabletting hole (241) downward, and the pressure shaft (25) is separated from the contact block (26) after being separated from the protruding block (261). ​ 2. The device according to claim 1, characterized in that: The driving part (5) includes a motor (51) fixedly installed on the top of the middle shaft (21), the output end of the motor (51) is fixedly connected with a gear (52), the top of the sleeve (22) is fixedly installed with a crown gear ring (53), and the gear (52) is engaged with the crown gear ring (53).

3. The device according to claim 1, wherein: The feeding assembly (3) includes a mounting frame (31) fixedly installed on the operation table (1), the mounting frame (31) is fixedly installed with a cartridge (32), the cartridge (32) is fixedly installed with a hopper (33), the cartridge (32) is in sliding contact with the top surface of the hole disc (24), and the tablet pressing hole (241) passes through the cartridge (32) and is filled with gunpowder during movement.

4. The device according to claim 3, wherein: The isolation assembly (4) includes a liquid tank (41) fixedly installed on the outer wall of the cartridge (32), the liquid tank (41) is fixedly installed with a liquid pipe (42) and an air pipe (47), the outer wall of the cartridge (32) is fixedly installed with a fixing cylinder (43), the inner wall of the fixing cylinder (43) is slidingly connected with a sliding shaft (44), the bottom of the sliding shaft (44) is fixedly connected with a spherical nozzle (45), the sliding shaft (44) and the spherical nozzle (45) are provided with a communicating flow channel, one end of the liquid pipe (42) away from the liquid tank (41) is in communication with the flow channel in the sliding shaft (44), the outer wall of the cartridge (32) is fixedly installed with an air bag (46), the air bag (46) is connected with one end of the air pipe (47) away from the liquid tank (41), a spring is arranged between the sliding shaft (44) and the fixing cylinder (43), the spherical nozzle (45) is located on the movement track of the tablet pressing hole (241), the spherical nozzle (45) can slide into the tablet pressing hole (241) by the spring force when the tablet pressing hole (241) passes below, the outer wall of the sliding shaft (44) is fixedly connected with a pressing block (48), the pressing block (48) is connected with the top of the air bag (46), a plurality of atomizing nozzles are arranged on the spherical nozzle (45), and the spherical nozzle (45) sprays the isolation agent in the tablet pressing hole (241) when sliding into the tablet pressing hole (241).

5. The device according to claim 4, characterized in that: The feeding assembly (3) further includes a pushing part (6), the pushing part (6) includes a slope block (61), the slope block (61) is fixedly installed in the box (32), a push block (62) is slidably connected between the bottom of the slope block (61) and the inner wall of the bottom of the box (32), a spring is arranged between the push block (62) and the inner wall of the box (32), a connecting rod (63) is fixedly installed on the push block (62), a rotating connecting rod (64) penetrates through the box (32), one end of the rotating connecting rod (64) is connected with the push block (62) through a sliding hinge, the other end of the rotating connecting rod (64) is fixedly connected with a ball head (65), the outer wall of the pressure plate (23) is fixedly connected with a wave ring (66), the ball head (65) is in sliding contact with the wave ring (66), when the wave ring (66) rotates, the ball head (65) can drive the rotating connecting rod (64) to reciprocating swing, when the rotating connecting rod (64) reciprocating swings, the push block (62) is driven to reciprocate by the connecting rod (63), two sawtooth rods (67) are fixedly connected on the push block (62), a vibrating rod (68) is fixedly installed in the box (32), two vibrating forks (69) are fixedly installed on the vibrating rod (68), when the sawtooth rods (67) move, the sawtooth rods (67) contact with the vibrating rod (68) and drive the vibrating rod (68) to vibrate.

6. The device according to claim 5, wherein: The feeding assembly (3) further includes a de-agglomeration part (7), the de-agglomeration part (7) includes two horizontal rods (71), the two horizontal rods (71) are fixedly connected to the inner wall of the hopper (33), a group of first steel sheets (72) are fixedly connected to the horizontal rods (71), two rotating shafts (73) are rotatably installed on the inner wall of the hopper (33), a group of second steel sheets (74) are fixedly connected to the rotating shafts (73), the two rotating shafts (73) are located between the two groups of first steel sheets (72), first connecting rods (75) are fixedly connected to the rotating shafts (73), a slide rod (76) is vertically and slidably connected to the inner wall of the box (32), a second connecting rod (77) is hingedly connected to the bottom of the slide rod (76), one end of the second connecting rod (77) away from the slide rod (76) is hingedly connected with the connecting rod (63), one end of the two first connecting rods (75) away from the rotating shafts (73) is hingedly connected with the slide rod (76), when the slide rod (76) moves up and down, the two rotating shafts (73) are driven to reciprocating rotate by the two first connecting rods (75).

7. A method for automatic filling and tabletting of pyrotechnic compositions, characterized in that: The automatic filling and tabletting device for pyrotechnic composition according to any one of claims 1-6 further comprises the following steps: Step one: raw material feeding, the raw materials are weighed and added to the mixing machine by the weight loss method; Step two: raw material mixing, the raw materials are mixed by the mixing machine to ensure that the uniformity of the raw materials meets the requirements; Step three: raw material pressing, the raw materials are pressed into slabs by the roller press; Step four: granulation, the slabs are crushed into particles by the granulator; Step five: processing aid addition, processing aids are added to the particles in proportion, and then mixed evenly by the mixing machine to obtain the pyrotechnic composition. Step six: tabletting, the gunpowder is put into the feeding assembly (3) and is continuously tabletted by the tabletting assembly (2). Step six: tabletting, the gunpowder is put into the feeding assembly (3) and is continuously tabletted by the tabletting assembly (2). Step six: tabletting, the gun

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